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htop/Meter.c

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/*
htop - Meter.c
(C) 2004-2006 Hisham H. Muhammad
Released under the GNU GPL, see the COPYING file
in the source distribution for its full text.
*/
#define _GNU_SOURCE
#include <math.h>
#include <string.h>
#include <stdlib.h>
#include <curses.h>
#include <stdarg.h>
#include "Meter.h"
#include "Object.h"
#include "CRT.h"
#include "ListItem.h"
#include "String.h"
#include "ProcessList.h"
#include "debug.h"
#include <assert.h>
#ifndef USE_FUNKY_MODES
#define USE_FUNKY_MODES 1
#endif
#define METER_BUFFER_LEN 128
/*{
typedef struct Meter_ Meter;
typedef struct MeterType_ MeterType;
typedef struct MeterMode_ MeterMode;
typedef void(*MeterType_Init)(Meter*);
typedef void(*MeterType_Done)(Meter*);
typedef void(*MeterType_SetMode)(Meter*, int);
typedef void(*Meter_SetValues)(Meter*, char*, int);
typedef void(*Meter_Draw)(Meter*, int, int, int);
struct MeterMode_ {
Meter_Draw draw;
char* uiName;
int h;
};
struct MeterType_ {
Meter_SetValues setValues;
Object_Display display;
int mode;
int items;
double total;
int* attributes;
char* name;
char* uiName;
char* caption;
MeterType_Init init;
MeterType_Done done;
MeterType_SetMode setMode;
Meter_Draw draw;
};
struct Meter_ {
Object super;
char* caption;
MeterType* type;
int mode;
int param;
Meter_Draw draw;
void* drawBuffer;
int h;
ProcessList* pl;
double* values;
double total;
};
typedef enum {
CUSTOM_METERMODE = 0,
BAR_METERMODE,
TEXT_METERMODE,
#ifdef USE_FUNKY_MODES
GRAPH_METERMODE,
LED_METERMODE,
#endif
LAST_METERMODE
} MeterModeId;
}*/
#include "CPUMeter.h"
#include "MemoryMeter.h"
#include "SwapMeter.h"
#include "TasksMeter.h"
#include "LoadAverageMeter.h"
#include "UptimeMeter.h"
#include "ClockMeter.h"
#ifndef MIN
#define MIN(a,b) ((a)<(b)?(a):(b))
#endif
#ifndef MAX
#define MAX(a,b) ((a)>(b)?(a):(b))
#endif
char* METER_CLASS = "Meter";
MeterType* Meter_types[] = {
&CPUMeter,
&ClockMeter,
&LoadAverageMeter,
&LoadMeter,
&MemoryMeter,
&SwapMeter,
&TasksMeter,
&UptimeMeter,
&AllCPUsMeter,
NULL
};
static MeterMode BarMeterMode = {
.uiName = "Bar",
.h = 1,
.draw = BarMeterMode_draw,
};
static MeterMode TextMeterMode = {
.uiName = "Text",
.h = 1,
.draw = TextMeterMode_draw,
};
#ifdef USE_FUNKY_MODES
static MeterMode GraphMeterMode = {
.uiName = "Graph",
.h = 3,
.draw = GraphMeterMode_draw,
};
static MeterMode LEDMeterMode = {
.uiName = "LED",
.h = 3,
.draw = LEDMeterMode_draw,
};
#endif
MeterMode* Meter_modes[] = {
NULL,
&BarMeterMode,
&TextMeterMode,
#ifdef USE_FUNKY_MODES
&GraphMeterMode,
&LEDMeterMode,
#endif
NULL
};
static RichString Meter_stringBuffer;
Meter* Meter_new(ProcessList* pl, int param, MeterType* type) {
Meter* this = calloc(sizeof(Meter), 1);
this->h = 1;
this->type = type;
this->param = param;
this->pl = pl;
this->values = calloc(sizeof(double), type->items);
this->total = type->total;
this->caption = strdup(type->caption);
((Object*)this)->delete = Meter_delete;
((Object*)this)->class = METER_CLASS;
((Object*)this)->display = type->display;
Meter_setMode(this, type->mode);
if (this->type->init)
this->type->init(this);
return this;
}
void Meter_delete(Object* cast) {
Meter* this = (Meter*) cast;
assert (this != NULL);
if (this->type->done) {
this->type->done(this);
}
if (this->drawBuffer)
free(this->drawBuffer);
free(this->caption);
free(this->values);
free(this);
}
void Meter_setCaption(Meter* this, char* caption) {
free(this->caption);
this->caption = strdup(caption);
}
static inline void Meter_displayToStringBuffer(Meter* this, char* buffer) {
MeterType* type = this->type;
Object_Display display = ((Object*)this)->display;
if (display) {
display((Object*)this, &Meter_stringBuffer);
} else {
RichString_prune(&Meter_stringBuffer);
RichString_append(&Meter_stringBuffer, CRT_colors[type->attributes[0]], buffer);
}
}
void Meter_setMode(Meter* this, int modeIndex) {
if (modeIndex > 0 && modeIndex == this->mode)
return;
if (!modeIndex)
modeIndex = 1;
assert(modeIndex < LAST_METERMODE);
if (this->type->mode == 0) {
this->draw = this->type->draw;
if (this->type->setMode)
this->type->setMode(this, modeIndex);
} else {
assert(modeIndex >= 1);
if (this->drawBuffer)
free(this->drawBuffer);
this->drawBuffer = NULL;
MeterMode* mode = Meter_modes[modeIndex];
this->draw = mode->draw;
this->h = mode->h;
}
this->mode = modeIndex;
}
ListItem* Meter_toListItem(Meter* this) {
MeterType* type = this->type;
char mode[21];
if (this->mode)
snprintf(mode, 20, " [%s]", Meter_modes[this->mode]->uiName);
else
mode[0] = '\0';
char number[11];
if (this->param > 0)
snprintf(number, 10, " %d", this->param);
else
number[0] = '\0';
char buffer[51];
snprintf(buffer, 50, "%s%s%s", type->uiName, number, mode);
return ListItem_new(buffer, 0);
}
/* ---------- TextMeterMode ---------- */
void TextMeterMode_draw(Meter* this, int x, int y, int w) {
MeterType* type = this->type;
char buffer[METER_BUFFER_LEN];
type->setValues(this, buffer, METER_BUFFER_LEN - 1);
attrset(CRT_colors[METER_TEXT]);
mvaddstr(y, x, this->caption);
int captionLen = strlen(this->caption);
w -= captionLen;
x += captionLen;
Meter_displayToStringBuffer(this, buffer);
mvhline(y, x, ' ', CRT_colors[DEFAULT_COLOR]);
attrset(CRT_colors[RESET_COLOR]);
mvaddchstr(y, x, Meter_stringBuffer.chstr);
}
/* ---------- BarMeterMode ---------- */
static char BarMeterMode_characters[] = "|#*@$%&";
void BarMeterMode_draw(Meter* this, int x, int y, int w) {
MeterType* type = this->type;
char buffer[METER_BUFFER_LEN];
type->setValues(this, buffer, METER_BUFFER_LEN - 1);
w -= 2;
attrset(CRT_colors[METER_TEXT]);
mvaddstr(y, x, this->caption);
int captionLen = strlen(this->caption);
x += captionLen;
w -= captionLen;
attrset(CRT_colors[BAR_BORDER]);
mvaddch(y, x, '[');
mvaddch(y, x + w, ']');
w--;
x++;
char bar[w];
int blockSizes[10];
for (int i = 0; i < w; i++)
bar[i] = ' ';
sprintf(bar + (w-strlen(buffer)), "%s", buffer);
// First draw in the bar[] buffer...
double total = 0.0;
int offset = 0;
for (int i = 0; i < type->items; i++) {
double value = this->values[i];
value = MAX(value, 0);
value = MIN(value, this->total);
if (value > 0) {
blockSizes[i] = ceil((value/this->total) * w);
} else {
blockSizes[i] = 0;
}
int nextOffset = offset + blockSizes[i];
// (Control against invalid values)
nextOffset = MIN(MAX(nextOffset, 0), w);
for (int j = offset; j < nextOffset; j++)
if (bar[j] == ' ') {
if (CRT_colorScheme == COLORSCHEME_MONOCHROME) {
bar[j] = BarMeterMode_characters[i];
} else {
bar[j] = '|';
}
}
offset = nextOffset;
total += this->values[i];
}
// ...then print the buffer.
offset = 0;
for (int i = 0; i < type->items; i++) {
attrset(CRT_colors[type->attributes[i]]);
mvaddnstr(y, x + offset, bar + offset, blockSizes[i]);
offset += blockSizes[i];
offset = MAX(offset, 0);
offset = MIN(offset, w);
}
if (offset < w) {
attrset(CRT_colors[BAR_SHADOW]);
mvaddnstr(y, x + offset, bar + offset, w - offset);
}
move(y, x + w + 1);
attrset(CRT_colors[RESET_COLOR]);
}
#ifdef USE_FUNKY_MODES
/* ---------- GraphMeterMode ---------- */
#define DrawDot(a,y,c) do { attrset(a); mvaddch(y, x+k, c); } while(0)
static int GraphMeterMode_colors[21] = {
GRAPH_1, GRAPH_1, GRAPH_1,
GRAPH_2, GRAPH_2, GRAPH_2,
GRAPH_3, GRAPH_3, GRAPH_3,
GRAPH_4, GRAPH_4, GRAPH_4,
GRAPH_5, GRAPH_5, GRAPH_6,
GRAPH_7, GRAPH_7, GRAPH_7,
GRAPH_8, GRAPH_8, GRAPH_9
};
static char* GraphMeterMode_characters = "^`'-.,_~'`-.,_~'`-.,_";
void GraphMeterMode_draw(Meter* this, int x, int y, int w) {
if (!this->drawBuffer) this->drawBuffer = calloc(sizeof(double), METER_BUFFER_LEN);
double* drawBuffer = (double*) this->drawBuffer;
for (int i = 0; i < METER_BUFFER_LEN - 1; i++)
drawBuffer[i] = drawBuffer[i+1];
MeterType* type = this->type;
char buffer[METER_BUFFER_LEN];
type->setValues(this, buffer, METER_BUFFER_LEN - 1);
double value = 0.0;
for (int i = 0; i < type->items; i++)
value += this->values[i];
value /= this->total;
drawBuffer[METER_BUFFER_LEN - 1] = value;
for (int i = METER_BUFFER_LEN - w, k = 0; i < METER_BUFFER_LEN; i++, k++) {
double value = drawBuffer[i];
DrawDot( CRT_colors[DEFAULT_COLOR], y, ' ' );
DrawDot( CRT_colors[DEFAULT_COLOR], y+1, ' ' );
DrawDot( CRT_colors[DEFAULT_COLOR], y+2, ' ' );
double threshold = 1.00;
for (int i = 0; i < 21; i++, threshold -= 0.05)
if (value >= threshold) {
DrawDot(CRT_colors[GraphMeterMode_colors[i]], y+(i/7.0), GraphMeterMode_characters[i]);
break;
}
}
attrset(CRT_colors[RESET_COLOR]);
}
/* ---------- LEDMeterMode ---------- */
static char* LEDMeterMode_digits[3][10] = {
{ " __ "," "," __ "," __ "," "," __ "," __ "," __ "," __ "," __ "},
{ "| |"," |"," __|"," __|","|__|","|__ ","|__ "," |","|__|","|__|"},
{ "|__|"," |","|__ "," __|"," |"," __|","|__|"," |","|__|"," __|"},
};
static void LEDMeterMode_drawDigit(int x, int y, int n) {
for (int i = 0; i < 3; i++)
mvaddstr(y+i, x, LEDMeterMode_digits[i][n]);
}
void LEDMeterMode_draw(Meter* this, int x, int y, int w) {
MeterType* type = this->type;
char buffer[METER_BUFFER_LEN];
type->setValues(this, buffer, METER_BUFFER_LEN - 1);
Meter_displayToStringBuffer(this, buffer);
attrset(CRT_colors[LED_COLOR]);
mvaddstr(y+2, x, this->caption);
int xx = x + strlen(this->caption);
for (int i = 0; i < Meter_stringBuffer.len; i++) {
char c = Meter_stringBuffer.chstr[i];
if (c >= '0' && c <= '9') {
LEDMeterMode_drawDigit(xx, y, c-48);
xx += 4;
} else {
mvaddch(y+2, xx, c);
xx += 1;
}
}
attrset(CRT_colors[RESET_COLOR]);
}
#endif
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